Spasoff, Robert A
Oxford University Press, 1999
Buku Teks
Taaffe, Robert N
Frederick A Preager, 1965
Buku Teks
Titi Muswati Putranti, author
2014
UI - Disertasi (Membership)
Lynch, James J., author
Pan Books, 1972
Buku Teks
Heilbroner, Robert L., author
Vintage Books , 1963
Buku Teks